Chris@102: // Copyright (C) 2013 Vicente J. Botet Escriba
Chris@102: //
Chris@102: //  Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@102: //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@102: //
Chris@102: // 2013/09 Vicente J. Botet Escriba
Chris@102: //    Adapt to boost from CCIA C++11 implementation
Chris@102: //    Make use of Boost.Move
Chris@102: 
Chris@102: #ifndef BOOST_THREAD_DETAIL_FUNCTION_WRAPPER_HPP
Chris@102: #define BOOST_THREAD_DETAIL_FUNCTION_WRAPPER_HPP
Chris@102: 
Chris@102: #include <boost/config.hpp>
Chris@102: #include <boost/thread/detail/memory.hpp>
Chris@102: #include <boost/thread/detail/move.hpp>
Chris@102: 
Chris@102: #include <boost/thread/csbl/memory/unique_ptr.hpp>
Chris@102: 
Chris@102: #include <memory>
Chris@102: #include <functional>
Chris@102: 
Chris@102: namespace boost
Chris@102: {
Chris@102:   namespace detail
Chris@102:   {
Chris@102:     class function_wrapper
Chris@102:     {
Chris@102:       struct impl_base
Chris@102:       {
Chris@102:         virtual void call()=0;
Chris@102:         virtual ~impl_base()
Chris@102:         {
Chris@102:         }
Chris@102:       };
Chris@102:       typedef boost::csbl::unique_ptr<impl_base> impl_base_type;
Chris@102:       impl_base_type impl;
Chris@102:       template <typename F>
Chris@102:       struct impl_type: impl_base
Chris@102:       {
Chris@102:         F f;
Chris@102:         impl_type(F const &f_)
Chris@102:           : f(f_)
Chris@102:         {}
Chris@102:         impl_type(BOOST_THREAD_RV_REF(F) f_)
Chris@102:           : f(boost::move(f_))
Chris@102:         {}
Chris@102: 
Chris@102:         void call()
Chris@102:         {
Chris@102:           if (impl) f();
Chris@102:         }
Chris@102:       };
Chris@102:     public:
Chris@102:       BOOST_THREAD_MOVABLE_ONLY(function_wrapper)
Chris@102: 
Chris@102: //#if ! defined  BOOST_NO_CXX11_RVALUE_REFERENCES
Chris@102:       template<typename F>
Chris@102:       function_wrapper(F const& f):
Chris@102:       impl(new impl_type<F>(f))
Chris@102:       {}
Chris@102: //#endif
Chris@102:       template<typename F>
Chris@102:       function_wrapper(BOOST_THREAD_RV_REF(F) f):
Chris@102:       impl(new impl_type<F>(boost::forward<F>(f)))
Chris@102:       {}
Chris@102:       function_wrapper(BOOST_THREAD_RV_REF(function_wrapper) other) BOOST_NOEXCEPT :
Chris@102:       impl(other.impl)
Chris@102:       {
Chris@102:         other.impl = 0;
Chris@102:       }
Chris@102:       function_wrapper()
Chris@102:         : impl(0)
Chris@102:       {
Chris@102:       }
Chris@102:       ~function_wrapper()
Chris@102:       {
Chris@102:       }
Chris@102: 
Chris@102:       function_wrapper& operator=(BOOST_THREAD_RV_REF(function_wrapper) other) BOOST_NOEXCEPT
Chris@102:       {
Chris@102:         impl=other.impl;
Chris@102:         other.impl=0;
Chris@102:         return *this;
Chris@102:       }
Chris@102: 
Chris@102:       void operator()()
Chris@102:       { impl->call();}
Chris@102: 
Chris@102:     };
Chris@102:   }
Chris@102: }
Chris@102: 
Chris@102: #endif // header